abc's brandi hitt is in boston. >> reporter: good morning, rob and paula. this is where mitt romney headquarters is set up. and where mitt romney hopes to hold a victory party later this evening. romney rallied support in the big battleground states he needs for victory, including florida, virginia and the biggest of all, ohio. he needs those states because this race is still so very close. >> i need your work. i need your help. i need your vote. >> reporter: romney ended his campaign swing in new hampshire with a big celebration that included a performance by kid rock. his campaign believes that romney has the momentum and enthusiasm on his side to win this race. and we'll find out today when voters hit the polls. rob and paula? >> today's the one poll that counts. thanks for that. >>> and make abc news your place for election returns with our team, live, right there in times square. it kicks off at 7:00 eastern time tonight. >>> well, there are also 33 senate seats up for grabs today. among the high-profile races, the one in massachusetts between democrat